/* ===== OPTIMIZED INDEX.CSS v3.1 ===== */

/* Import Components */
@import "./components/card.css";
@import "../components/particles/three-earth.css";
@import "./utilities.css";

/* ===== ACCESSIBILITY & UTILITIES ===== */

/* Screen Reader Only / Visually Hidden */
.sr-only,
.visually-hidden {
  position: absolute !important;
  width: var(--size-1) !important;
  height: var(--size-1) !important;
  padding: 0 !important;
  margin: calc(var(--size-1) * -1) !important;
  overflow: hidden !important;
  clip-path: inset(50%) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Skip-to-main-content link (visible on focus for keyboard users) */
.skip-link:focus {
  position: fixed !important;
  top: calc(var(--space-4) + var(--safe-top));
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-site-top);
  width: auto !important;
  height: auto !important;
  padding: var(--btn-padding-y) var(--btn-padding-x);
  margin: 0 !important;
  clip-path: none !important;
  white-space: normal !important;
  background: var(--primary-color);
  color: var(--clr-white);
  font-size: var(--btn-font-size);
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  box-shadow: var(--shadow-lg);
}

/* Utility: Hide element completely */
.hidden {
  display: none !important;
}

/* Focus Indicators for all interactive elements */
button:focus-visible,
a:focus-visible,
[tabindex]:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: var(--btn-focus-outline);
  outline-offset: var(--btn-focus-offset);
  box-shadow: 0 0 0 var(--size-4) color-mix(in srgb, var(--primary-color) 55%, transparent);
  background: var(--btn-focus-bg);
  border-radius: var(--btn-focus-radius);
  transition:
    box-shadow var(--transition-fast),
    outline-color var(--transition-fast);
}

/* ===== END ACCESSIBILITY & UTILITIES ===== */

/* ===== BUTTON STYLES (with CSS Nesting) ===== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--btn-padding-y) var(--btn-padding-x);
  font-size: var(--btn-font-size);
  font-weight: 500;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    background-color var(--transition-base);
  text-decoration: none;
  position: relative;
  overflow: hidden;
  min-width: var(--btn-min-width);
  text-align: center;

  /* Primary variant */
  &.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--clr-white);
    box-shadow: var(--btn-shadow-primary);

    &:hover {
      box-shadow: var(--btn-shadow-primary-hover);
      transform: var(--transform-lift-sm);

      &::before {
        left: 100%;
      }
    }

    &::before {
      content: "";
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: var(--btn-shine-bg);
      transition: left var(--transition-smooth);
      pointer-events: none;
    }
  }

  /* Secondary variant */
  &.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: var(--size-2) solid var(--primary-color);

    &:hover {
      border-color: var(--primary-color);
      color: var(--primary-color);
    }
  }

  /* Mobile adjustments */
  @media (width <= 480px) {
    min-width: var(--btn-min-width-mobile);
  }
}

/* ===== END BUTTON STYLES ===== */

/* ===== LAYOUT & SECTIONS ===== */

main {
  margin-top: 0 !important;
  padding: 0 !important;
  min-height: calc(100vh - var(--content-top-offset) - var(--content-bottom-offset));
}

main {
  @supports (min-height: 100dvh) {
    min-height: calc(100dvh - var(--content-top-offset) - var(--content-bottom-offset));
  }
}

.section {
  scroll-snap-align: start;
  scroll-snap-stop: always;
  min-height: calc(100vh - var(--content-top-offset) - var(--content-bottom-offset));
  height: calc(100vh - var(--content-top-offset) - var(--content-bottom-offset));
  display: flex;
  flex-direction: column;
  justify-content: center;

  @supports (min-height: 100dvh) {
    min-height: calc(100dvh - var(--content-top-offset) - var(--content-bottom-offset));
    height: calc(100dvh - var(--content-top-offset) - var(--content-bottom-offset));
  }

  @supports (content-visibility: auto) {
    /* OPTIMIZATION: content-visibility allows browser to skip rendering work for off-screen sections */
    content-visibility: auto;
    /* Fallback size estimation to prevent scrollbar jumping */
    contain-intrinsic-size: auto 100vh;
  }
}

@media (width <= 768px) {
  .section.features,
  .section.about {
    padding-block: clamp(var(--size-r-2-5), 8vw, var(--size-r-3-5));
  }
}

/* ===== END LAYOUT & SECTIONS ===== */

/* ===== BASE STYLES ===== */

/* Base Styles */
html {
  width: 100%;
  background: var(--bg-primary);
  scroll-behavior: smooth;
}

.snap-page {
  scroll-snap-type: y mandatory;
}

body {
  width: 100%;
  overflow-x: hidden;
  scroll-padding-top: var(--content-top-offset);
  transition: padding-bottom var(--transition-base);
  -webkit-font-smoothing: antialiased;
  font-kerning: normal;
  font-variant-ligatures: common-ligatures contextual;
  font-feature-settings:
    "kern" 1,
    "liga" 1,
    "calt" 1;
  font-family: var(--font-inter);
  background: transparent;
  color: var(--text-primary);
  margin: 0;
  padding-top: var(--content-top-offset);
  padding-bottom: var(--content-bottom-offset);
  padding-left: var(--safe-left);
  padding-right: var(--safe-right);
  position: relative;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

/* Container System */
.container {
  width: min(100%, var(--container-width));
  margin-inline: auto;
  padding-inline: max(clamp(var(--size-r-0-5), 4vw, var(--size-r-1-5)), var(--safe-left));
  box-sizing: border-box;
}

/* Page-specific container overrides — centralized */
.contact-page main.container {
  /* Contact page is narrower and gets extra inner padding */
  max-width: var(--size-760);
  padding: var(--space-3);
  min-height: calc(100vh - var(--content-top-offset) - var(--content-bottom-offset));
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-2);
  align-items: stretch;

  @supports (min-height: 100dvh) {
    min-height: calc(100dvh - var(--content-top-offset) - var(--content-bottom-offset));
  }
}

/* ===== END BASE STYLES ===== */

/* ===== TYPOGRAPHY ===== */

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: clamp(var(--size-r-1-75), 3vw, var(--size-r-2-5));
  margin-top: 0;
  padding: 0;
  position: relative;
  z-index: var(--z-elevated);
}

.section-title {
  position: relative;
  display: inline-block;
  font-size: clamp(var(--size-r-1-5), 4.5vw, var(--size-r-2-5));
  margin-bottom: clamp(var(--size-r-1), 2vw, var(--size-r-1-25));
  padding: 0;
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;

  &::after {
    content: "";
    position: absolute;
    bottom: calc(var(--space-2) * -1);
    left: 50%;
    transform: translateX(-50%);
    width: clamp(var(--size-50), 8vw, var(--size-70));
    height: var(--space-1);
    background: linear-gradient(
      90deg,
      var(--primary-color) 0%,
      var(--primary-light) 50%,
      var(--primary-color) 100%
    );
    border-radius: var(--radius-full);
    box-shadow: var(--btn-shadow-primary-hover);
  }
}

.section-subtitle {
  font-size: clamp(var(--size-r-1), 2.2vw, var(--size-r-1-2));
  color: var(--text-secondary);
  margin-bottom: clamp(var(--size-r-1-5), 3vw, var(--size-r-2));
  font-weight: 400;
  line-height: 1.5;
  opacity: 0.9;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1,
h2,
h3 {
  letter-spacing: -0.012em;
}

h4,
h5,
h6 {
  letter-spacing: -0.006em;
}

@supports (text-wrap: balance) {
  h1,
  h2,
  h3,
  h4,
  h5,
  h6,
  .section-title {
    text-wrap: balance;
  }
}

h1 {
  font-size: clamp(var(--size-r-2-5), 5vw, var(--size-r-4));
}

h2 {
  font-size: clamp(var(--size-r-2), 4vw, var(--size-r-3));
}

h3 {
  font-size: clamp(var(--size-r-1-5), 3vw, var(--size-r-2));
}

h4 {
  font-size: clamp(var(--size-r-1-25), 2vw, var(--size-r-1-5));
}

h5 {
  font-size: var(--size-r-1-125);
}

h6 {
  font-size: var(--size-r-1);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
  line-height: 1.6;
  letter-spacing: 0.003em;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-fast);

  &:hover {
    color: var(--primary-light);
  }
}

/* ===== END TYPOGRAPHY ===== */

/* ===== UTILITIES ===== */

/* Utilities */

.u-center {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--gap-xs);
}

.u-inline-center {
  display: inline-flex;
  align-items: center;
  gap: var(--gap-xs);
}

.u-stack {
  display: flex;
  flex-direction: column;
  gap: var(--gap-xs);
}

.u-row {
  display: flex;
  align-items: center;
  gap: var(--gap-xs);
}

.u-wrap {
  flex-wrap: wrap;
}

.u-between {
  justify-content: space-between;
}

/* ===== END UTILITIES ===== */

/* ===== GLOBAL COMPONENTS ===== */

::selection {
  background: var(--primary-color);
  color: var(--clr-white);
}

/* ===== END GLOBAL COMPONENTS ===== */

/* ===== RESPONSIVE: MOBILE & TABLET ===== */

/* Tablet and Mobile breakpoint */
@media (width <= 768px) {
  html {
    font-size: var(--size-15);
  }

  .section {
    padding: var(--spacing-xl) 0;
  }
}

/* Mobile breakpoint (small) */
@media (width <= 600px) {
  .about-page main.container {
    padding-top: calc(var(--menu-height-mobile) + var(--space-5));
  }

  /* h1 size is already handled by clamp() in base typography */

  .card {
    padding: var(--space-6);
  }
}

/* Mobile breakpoint (narrow) */
@media (width <= 480px) {
  .container {
    max-width: 100%;
    padding-inline: max(var(--space-2), var(--safe-left));
  }

  .container p,
  .container h1,
  .container h2,
  .container h3,
  .container h4,
  .container h5,
  .container h6 {
    overflow-wrap: anywhere;
  }
}

/* Mobile breakpoint (compact) */
@media (width <= 375px) {
  html {
    font-size: var(--size-14);
  }

  .container {
    padding-inline: max(var(--space-1), var(--safe-left));
  }

  .section {
    padding: var(--spacing-lg) 0;
  }
}

/* ===== END RESPONSIVE ===== */

/* ===== PRINT STYLES ===== */

@media print {
  body {
    color: var(--clr-black);
    background: var(--clr-white);
    font-size: 12pt;
  }

  .container {
    max-width: var(--size-900);
    margin: 0 auto;
    width: 100%;
  }

  a {
    color: var(--clr-black);
    text-decoration: underline;
  }

  button,
  .btn {
    display: none;
  }

  * {
    animation: none;
    transition: none;
  }
}

.alias-page-main {
  padding: var(--space-12) var(--space-4);
}

.alias-page-card {
  max-width: var(--container-width-narrow);
  margin: 0 auto;
}

.error-boundary-fallback {
  margin: var(--space-8) auto;
  max-width: var(--size-600);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  text-align: center;
  color: color-mix(in srgb, var(--clr-white) 82%, transparent);
  background: color-mix(in srgb, var(--clr-black) 50%, transparent);

  &__title {
    margin-bottom: var(--space-4);
    color: var(--clr-red-500);
  }

  &__action {
    margin-top: var(--space-4);
    border: 0;
    border-radius: var(--radius-sm);
    padding: var(--space-2) var(--space-6);
    cursor: pointer;
    font-size: var(--btn-font-size);
    color: var(--clr-white);
    background: var(--primary-color);
  }
}

/* ===== END PRINT STYLES ===== */